Patents by Inventor Eli DAGAN

Eli DAGAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11964068
    Abstract: Embodiments of the present disclosure relate to an oxygen cleaning chamber with UV radiation generator temperature control and a method of atomic oxygen cleaning a substrate. The atomic oxygen cleaning chamber includes a process chamber and a cooling chamber coupled to the process chamber and a divider sealingly separating the process chamber from the cooling chamber. An ultraviolet (UV) radiation generator is disposed in the cooling chamber and provides UV radiation through the divider into the process chamber. A gas distribution assembly distributes ozone over an upper surface of a pedestal in the process chamber and a coolant distribution assembly distributes cooling gas into the cooling chamber to cool the UV radiation generator. By actively cooling the UV radiation generator, a higher intensity UV radiation at a stable wavelength is produced, i.e., without wavelength drift normally associated with high power UV radiation generator outputs.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: April 23, 2024
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Banqiu Wu, Eli Dagan
  • Patent number: 11908679
    Abstract: Embodiments described herein relate to oxygen cleaning chambers and a method of atomic oxygen cleaning a substrate. The oxygen cleaning chambers and method of atomic oxygen cleaning a substrate provide for generation of atomic oxygen in situ to oxidize materials on the surfaces of the substrate. The atomic oxygen cleaning chamber includes a chamber body, a chamber lid, a processing volume defined by the chamber body and the chamber lid, an UV radiation generator including one or more UV radiation sources, a pedestal disposed in the processing volume, and a gas distribution assembly. The pedestal has a processing position corresponding to a distance from the UV radiation generator to an upper surface of the pedestal. The gas distribution assembly is configured to be connected to an ozone generator to distribute ozone over the upper surface of the pedestal.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: February 20, 2024
    Assignee: Applied Materials, Inc.
    Inventors: Banqiu Wu, Eli Dagan
  • Patent number: 11467508
    Abstract: Embodiments of the present disclosure generally include apparatus and methods for removing adhesive residues from a surface of a lithography mask. In particular, the processing systems described herein provide for the delivery of a solvent to a discrete plurality of locations on the surface of the lithography mask to facilitate the removal of adhesive residue therefrom. In one embodiment, a method of processing a substrate includes positioning the substrate on a substrate support of a processing system, sealing individual ones of a plurality of cleaning units to a surface of the substrate at a corresponding plurality of locations, heating a cleaning fluid to a temperature between about 50° C. and about 150° C., flowing the cleaning fluid to, and thereafter, from, the plurality of cleaning units, and exposing the surface of the substrate to the cleaning fluid at the plurality of locations.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: October 11, 2022
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Banqiu Wu, Eli Dagan
  • Publication number: 20220288259
    Abstract: Embodiments of the present disclosure relate to an oxygen cleaning chamber with UV radiation generator temperature control and a method of atomic oxygen cleaning a substrate. The atomic oxygen cleaning chamber includes a process chamber and a cooling chamber coupled to the process chamber and a divider sealingly separating the process chamber from the cooling chamber. An ultraviolet (UV) radiation generator is disposed in the cooling chamber and provides UV radiation through the divider into the process chamber. A gas distribution assembly distributes ozone over an upper surface of a pedestal in the process chamber and a coolant distribution assembly distributes cooling gas into the cooling chamber to cool the UV radiation generator. By actively cooling the UV radiation generator, a higher intensity UV radiation at a stable wavelength is produced, i.e., without wavelength drift normally associated with high power UV radiation generator outputs.
    Type: Application
    Filed: March 12, 2021
    Publication date: September 15, 2022
    Inventors: Banqiu WU, Eli DAGAN
  • Patent number: 11114350
    Abstract: Methods and apparatus for removing a photoresist layer from a photomask substrate are provided. In one example, a method for removing a photoresist layer from a substrate in a chamber includes generating a first plasma including first radicals from a first gas mixture in a processing chamber, exposing a portion of a photoresist layer on a substrate to the first radicals to remove the portion of the photoresist layer from the substrate, generating a second plasma including second radicals from a second gas mixture, wherein the second radicals have a different composition than the first radicals, and exposing another portion of photoresist layer to the second radicals to remove the second portion of the photoresist layer.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: September 7, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Banqiu Wu, Khalid Makhamreh, Eli Dagan
  • Patent number: 11054746
    Abstract: Generally, examples described herein relate to systems and methods for processing a substrate, and more particularly, for removing an edge bead or other source of contamination from an edge of a substrate. An example is a processing system including a chamber, a substrate handler within the chamber, and a radiation generator within the chamber. The substrate handler is configured to secure a substrate. The substrate handler is operable to position an edge surface of the substrate such that radiation propagating from the radiation generator is directed to the edge surface of the substrate, and operable to position a periphery region of a deposit surface of the substrate that is perpendicular to and along the edge surface such that radiation propagating from the radiation generator is directed to the periphery region.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: July 6, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Banqiu Wu, Eli Dagan
  • Publication number: 20210185793
    Abstract: Embodiments of the present disclosure generally provide apparatus and methods for removing an adhesive material from a photomask. In one embodiment, an apparatus for processing a photomask includes an enclosure, a substrate support assembly disposed in the enclosure, and a dielectric barrier discharge (DBD) plasma generator disposed above the substrate support assembly, wherein the dielectric barrier discharge plasma generator further comprises a first electrode, a second electrode, wherein the first and the second electrodes are vertically aligned and in parallel, a dielectric barrier positioned between the first electrode and the second electrode, and a discharge space defined between the dielectric barrier and the second electrode.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 17, 2021
    Inventors: Banqiu WU, Khalid MAKHAMREH, Eli DAGAN
  • Patent number: 10962889
    Abstract: Embodiments of the present disclosure generally relate to methods and apparatus for preparing a photomask for a lithography process. In one embodiment, a curing chamber is disclosed that includes an elevator adapted to receive a plurality of holder units. Each of the holder units comprise a holder, a clamp holding a photomask, one or more studs coupled to the photomask by an adhesive, and a spring coupled to each of the one or more studs.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: March 30, 2021
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Banqiu Wu, Eli Dagan, Khalid Makhamreh, Bruce J. Fender
  • Patent number: 10933624
    Abstract: Embodiments described herein generally relate to an apparatus and methods for removing a glue residue from a photomask. The glue residue may be exposed when a pellicle is removed from the photomask. Before a new pellicle can be adhered to the photomask, the glue residue may be removed. To remove the glue residue, a laser beam may be projected through a lens and focused on a surface of the glue residue. The glue residue may be ablated from the photomask by the laser beam.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: March 2, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Banqiu Wu, Eli Dagan
  • Patent number: 10928724
    Abstract: Embodiments of the present disclosure generally provide apparatus and methods for removing an attachment feature utilized to hold a pellicle from a photomask. In one embodiment, an attachment feature removal apparatus for processing a photomask includes an attachment feature puller comprising an actuator, a clamp coupled to the actuator, the clamp adapted to grip an attachment feature, and a coil assembly disposed adjacent to the attachment feature.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: February 23, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Banqiu Wu, Eli Dagan, Khalid Makhamreh, Bruce J. Fender
  • Publication number: 20200328128
    Abstract: Methods and apparatus for removing a photoresist layer from a photomask substrate are provided. In one example, a method for removing a photoresist layer from a substrate in a chamber includes generating a first plasma including first radicals from a first gas mixture in a processing chamber, exposing a portion of a photoresist layer on a substrate to the first radicals to remove the portion of the photoresist layer from the substrate, generating a second plasma including second radicals from a second gas mixture, wherein the second radicals have a different composition than the first radicals, and exposing another portion of photoresist layer to the second radicals to remove the second portion of the photoresist layer.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 15, 2020
    Inventors: Banqiu WU, Khalid MAKHAMREH, Eli DAGAN
  • Patent number: 10802392
    Abstract: Embodiments described herein relate to apparatus and methods for removing one or more films from a photomask to create a black border and one or more pellicle anchor areas thereon. A photomask substrate is exposed by removing the one or more films in the black border and pellicle anchor areas. The black border prevents a pattern on the photomask from overlapping a pattern on a substrate being processed. To create the black border and pellicle anchor areas, a laser beam is projected through a lens and focused on a surface of the films. The films are ablated by the laser beam without damaging the photomask substrate.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: October 13, 2020
    Assignee: Applied Materials, Inc.
    Inventors: Banqiu Wu, Eli Dagan
  • Publication number: 20200290339
    Abstract: Embodiments described herein generally relate to an apparatus and methods for removing a glue residue from a photomask. The glue residue may be exposed when a pellicle is removed from the photomask. Before a new pellicle can be adhered to the photomask, the glue residue may be removed. To remove the glue residue, a laser beam may be projected through a lens and focused on a surface of the glue residue. The glue residue may be ablated from the photomask by the laser beam.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Inventors: Banqiu WU, Eli DAGAN
  • Patent number: 10710358
    Abstract: Embodiments described herein generally relate to an apparatus and methods for removing a glue residue from a photomask. The glue residue may be exposed when a pellicle is removed from the photomask. Before a new pellicle can be adhered to the photomask, the glue residue may be removed. To remove the glue residue, a laser beam may be projected through a lens and focused on a surface of the glue residue. The glue residue may be ablated from the photomask by the laser beam.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: July 14, 2020
    Assignee: Applied Materials, Inc.
    Inventors: Banqiu Wu, Eli Dagan
  • Publication number: 20200183268
    Abstract: Embodiments of the present disclosure generally provide apparatus and methods for removing an attachment feature utilized to hold a pellicle from a photomask. In one embodiment, an attachment feature removal apparatus for processing a photomask includes an attachment feature puller comprising an actuator, a clamp coupled to the actuator, the clamp adapted to grip an attachment feature, and a coil assembly disposed adjacent to the attachment feature.
    Type: Application
    Filed: October 23, 2019
    Publication date: June 11, 2020
    Inventors: Banqiu WU, Eli DAGAN, Khalid MAKHAMREH, Bruce J. FENDER
  • Publication number: 20200166834
    Abstract: Embodiments of the present disclosure generally relate to methods and apparatus for preparing a photomask for a lithography process. In one embodiment, a curing chamber is disclosed that includes an elevator adapted to receive a plurality of holder units. Each of the holder units comprise a holder, a clamp holding a photomask, one or more studs coupled to the photomask by an adhesive, and a spring coupled to each of the one or more studs.
    Type: Application
    Filed: November 15, 2019
    Publication date: May 28, 2020
    Inventors: Banqiu WU, Eli DAGAN, Khalid MAKHAMREH, Bruce J. FENDER
  • Publication number: 20200096860
    Abstract: Generally, examples described herein relate to systems and methods for processing a substrate, and more particularly, for removing an edge bead or other source of contamination from an edge of a substrate. An example is a processing system including a chamber, a substrate handler within the chamber, and a radiation generator within the chamber. The substrate handler is configured to secure a substrate. The substrate handler is operable to position an edge surface of the substrate such that radiation propagating from the radiation generator is directed to the edge surface of the substrate, and operable to position a periphery region of a deposit surface of the substrate that is perpendicular to and along the edge surface such that radiation propagating from the radiation generator is directed to the periphery region.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 26, 2020
    Inventors: Banqiu WU, Eli DAGAN
  • Publication number: 20200098556
    Abstract: Embodiments described herein relate to oxygen cleaning chambers and a method of atomic oxygen cleaning a substrate. The oxygen cleaning chambers and method of atomic oxygen cleaning a substrate provide for generation of atomic oxygen in situ to oxidize materials on the surfaces of the substrate. The atomic oxygen cleaning chamber includes a chamber body, a chamber lid, a processing volume defined by the chamber body and the chamber lid, an UV radiation generator including one or more UV radiation sources, a pedestal disposed in the processing volume, and a gas distribution assembly. The pedestal has a processing position corresponding to a distance from the UV radiation generator to an upper surface of the pedestal. The gas distribution assembly is configured to be connected to an ozone generator to distribute ozone over the upper surface of the pedestal.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 26, 2020
    Inventors: Banqiu WU, Eli DAGAN
  • Publication number: 20200057362
    Abstract: Embodiments described herein relate to apparatus and methods for removing one or more films from a photomask to create a black border and one or more pellicle anchor areas thereon. A photomask substrate is exposed by removing the one or more films in the black border and pellicle anchor areas. The black border prevents a pattern on the photomask from overlapping a pattern on a substrate being processed. To create the black border and pellicle anchor areas, a laser beam is projected through a lens and focused on a surface of the films. The films are ablated by the laser beam without damaging the photomask substrate.
    Type: Application
    Filed: July 12, 2019
    Publication date: February 20, 2020
    Inventors: Banqiu WU, Eli DAGAN
  • Publication number: 20200033740
    Abstract: Embodiments of the present disclosure generally include apparatus and methods for removing adhesive residues from a surface of a lithography mask. In particular, the processing systems described herein provide for the delivery of a solvent to a discrete plurality of locations on the surface of the lithography mask to facilitate the removal of adhesive residue therefrom. In one embodiment, a method of processing a substrate includes positioning the substrate on a substrate support of a processing system, sealing individual ones of a plurality of cleaning units to a surface of the substrate at a corresponding plurality of locations, heating a cleaning fluid to a temperature between about 50° C. and about 150° C., flowing the cleaning fluid to, and thereafter, from, the plurality of cleaning units, and exposing the surface of the substrate to the cleaning fluid at the plurality of locations.
    Type: Application
    Filed: June 21, 2019
    Publication date: January 30, 2020
    Inventors: Banqiu WU, Eli DAGAN